LT1246 Ver la hoja de datos (PDF) - Linear Technology
Número de pieza
componentes Descripción
Fabricante
LT1246 Datasheet PDF : 12 Pages
| |||
LT1246/LT1247
ABSOLUTE AXI U RATI GS
Supply Voltage ....................................................... 25V
Output Current ...................................................... ±1A*
Output Energy (Capacitive Load per Cycle) ............. 5µJ
Analog Inputs (Pins 2, 3) .............................. – 0.3 to 6V
Error Amplifier Output Sink Current ..................... 10mA
Power Dissipation at TA ≤ 25°C ............................... 1W
Operating Junction Temperature Range
LT1246C/LT1247C ............................. 0°C to 100°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
*The 1A rating for output current is based on transient switching
requirements.
PACKAGE/ORDER I FOR ATIO
TOP VIEW
COMP 1
FB 2
ISENSE 3
RT/CT 4
8 VREF
7 VCC
6 OUTPUT
5 GND
N8 PACKAGE
8-LEAD PDIP
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 100°C, θJA = 130°C/W (N8)
TJMAX = 100°C, θJA = 150°C/W (S8)
ORDER PART
NUMBER
LT1246CN8
LT1246CS8
LT1247CN8
LT1247CS8
S8 PART MARKING
1246
1247
Consult factory for Industrial and Military grade parts.
ELECTRICAL CHARACTERISTICS (Notes 1, 2)
PARAMETER
Reference Section
Output Voltage
Line Regulation
Load Regulation
Temperature Stability
Total Output Variation
Output Noise Voltage
Long-Term Stability
Output Short-Circuit Current
Oscillator Section
Initial Accuracy
Voltage Stability
Temperature Stability
Amplitude
Clock Ramp Reset Current
Error Amplifier Section
Feedback Pin Input Voltage
Input Bias Current
Open-Loop Voltage Gain
Unity-Gain Bandwidth
Power Supply Rejection Ratio
Output Sink Current
Output Source Current
CONDITIONS
IO = 1mA, TJ = 25°C
12V < VCC < 25V
q
1mA < IREF < 20mA
q
Line, Load, Temperature
q
10Hz < F < 10kHz, TJ = 25°C
TA = 125°C, 1000 Hrs.
q
RT = 10k, CT = 3.3nF, TJ = 25°C
RT = 6.2k, CT = 500pF, TJ = 25°C
12V < VCC < 25V, TJ = 25°C
TMIN < TJ < TMAX
Pin 4
VOSC (Pin 4) = 2V, TJ = 25°C
VPIN 1 = 2.5V
q
VFB = 2.5V
q
2 < VO < 4V
q
TJ = 25°C
12V < VCC < 25V
q
VPIN 2 = 2.7V, VPIN 1 = 1.1V
q
VPIN 2 = 2.3V, VPIN 1 = 5V
q
2
MIN
4.925
4.87
– 30
47.5
465
7.9
2.42
65
1
60
2
– 0.5
TYP
5.000
3
–6
0.1
50
5
– 90
50
500
– 0.05
1.7
8.2
2.50
90
2
6
– 0.75
MAX
5.075
20
– 25
5.13
25
– 180
52.5
535
1
8.5
2.58
–2
UNITS
V
mV
mV
mV/°C
V
µV
mV
mA
kHz
kHz
%
%/°C
V
mA
V
µA
dB
MHz
dB
mA
mA
Share Link: 